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如何执行全链路智能编排高级蓝绿灰度发布

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HaojunRen edited this page Oct 15, 2022 · 20 revisions

本文档只适用于Discovery 6.16.3及以上版本的集成方式

链路智能编排的方式，即路由链路在后台会智能化编排，用户不再需要关心服务实例的版本情况而进行手工编排，只需要配置跟业务参数有关的条件表达式即可，让蓝绿灰度发布变的更简单更易用

全链路智能编排版本前提

  • 线上所有的服务，每个服务实例版本号支持排序，时间戳方式或者数字递增方式都可以

全链路智能编排版本逻辑

  • 线上所有的服务，每个服务至少有一个版本
  • 线上所有的服务，每个服务如果有两个版本，第一个划归为旧版本，第二个划归为新版本
  • 线上所有的服务，每个服务如果有三个及以上版本，第一个划归为旧版本，第二个到最后划归为新版本。通过逗号分隔的方式放入，例如，2.0;3.0;4.0
  • 线上所有的服务，如果有未接入Nepxion Discovery框架，或者接入了却未设置版本，拉取实例列表的时候，版本默认视作为default值，并划归为旧版本

全链路智能编排实现原理

通过向控制台发送请求，控制台根据Json格式规则策略，根据新旧版本的判断，智能编排出两条新旧路由链路，并给它们赋予不同的条件表达式，最终创建出完整的Xml格式规则策略，保存到配置中心

全链路智能编排使用方式

  • 创建版本兜底规则策略

Yaml格式

service:
  - discovery-guide-service-a
  - discovery-guide-service-b

Json格式

{
  "service": ["discovery-guide-service-a", "discovery-guide-service-b"]
}

经过链路智能编排，等效于

<?xml version="1.0" encoding="UTF-8"?>
<rule>
    <strategy>
        <version>{"discovery-guide-service-a":"1.0","discovery-guide-service-b":"1.0"}</version>
    </strategy>
</rule>
  • 创建版本蓝绿规则策略

Yaml格式

service:
  - discovery-guide-service-a
  - discovery-guide-service-b
blueGreen:
  - expression: "#H['xyz'] == '1'"
    route: green
  - expression: "#H['xyz'] == '2'"
    route: blue

Json格式

{
  "service": ["discovery-guide-service-a", "discovery-guide-service-b"],
  "blueGreen": [
    {
      "expression": "#H['xyz'] == '1'",
      "route": "green"
    }, 
    {
      "expression": "#H['xyz'] == '2'",
      "route": "blue"
    }
  ]
}

经过链路智能编排，等效于

<?xml version="1.0" encoding="UTF-8"?>
<rule>
    <strategy>
        <version>{"discovery-guide-service-a":"1.0","discovery-guide-service-b":"1.0"}</version>
    </strategy>
    <strategy-release>
        <conditions type="blue-green">
            <condition id="condition-0" expression="#H['xyz'] == '1'" version-id="route-0"/>
            <condition id="condition-1" expression="#H['xyz'] == '2'" version-id="route-1"/>
        </conditions>
        <routes>
            <route id="route-0" type="version">{"discovery-guide-service-a":"1.0","discovery-guide-service-b":"1.0"}</route>
            <route id="route-1" type="version">{"discovery-guide-service-a":"1.1","discovery-guide-service-b":"1.1"}</route>
        </routes>
    </strategy-release>
</rule>
  • 创建版本灰度规则策略

Yaml格式

service:
  - discovery-guide-service-a
  - discovery-guide-service-b
gray:
  - expression: "#H['xyz'] == '3'"
    weight:
      - 90
      - 10
  - expression: "#H['xyz'] == '4'"
    weight:
      - 70
      - 30
  - weight:
      - 100
      - 0

Json格式

{
  "service": ["discovery-guide-service-a", "discovery-guide-service-b"],
  "gray": [
    {
      "expression": "#H['xyz'] == '3'",
      "weight": [90, 10]
    },
    {
      "expression": "#H['xyz'] == '4'",
      "weight": [70, 30]
    },
    {
      "weight": [100, 0]
    }
  ]
}

经过链路智能编排，等效于

<?xml version="1.0" encoding="UTF-8"?>
<rule>
    <strategy>
        <version>{"discovery-guide-service-a":"1.0","discovery-guide-service-b":"1.0"}</version>
    </strategy>
    <strategy-release>
        <conditions type="gray">
            <condition id="condition-0" expression="#H['xyz'] == '3'" version-id="route-0=90;route-1=10"/>
            <condition id="condition-1" expression="#H['xyz'] == '4'" version-id="route-0=70;route-1=30"/>
            <condition id="condition-2" version-id="route-0=100;route-1=0"/>
        </conditions>
        <routes>
            <route id="route-0" type="version">{"discovery-guide-service-a":"1.0","discovery-guide-service-b":"1.0"}</route>
            <route id="route-1" type="version">{"discovery-guide-service-a":"1.1","discovery-guide-service-b":"1.1"}</route>
        </routes>
    </strategy-release>
</rule>
  • 创建版本混合蓝绿灰度 + 内置Header规则策略

Yaml格式

service:
  - discovery-guide-service-a
  - discovery-guide-service-b
blueGreen:
  - expression: "#H['xyz'] == '1'"
    route: green
  - expression: "#H['xyz'] == '2'"
    route: blue
gray:
  - expression: "#H['xyz'] == '3'"
    weight:
      - 90
      - 10
  - expression: "#H['xyz'] == '4'"
    weight:
      - 70
      - 30
  - weight:
      - 100
      - 0
header:
  xyz: 1

Json格式

使用时候，请删除中文注释，否则会报错

{
  "service": ["discovery-guide-service-a", "discovery-guide-service-b"],
  "blueGreen": [
    {
      "expression": "#H['xyz'] == '1'",
      // 绿（旧版本）路由链路
      "route": "green"
    }, 
    {
      "expression": "#H['xyz'] == '2'",
      // 蓝（新版本）路由链路
      "route": "blue"
    }
  ],
  "gray": [
    {
      "expression": "#H['xyz'] == '3'",
      // 稳定（旧版本）路由链路权重，灰度（新版本）路由链路权重
      "weight": [90, 10]
    },
    {
      "expression": "#H['xyz'] == '4'",
      "weight": [70, 30]
    },
    {
      "weight": [100, 0]
    }
  ],
  "header": {"xyz": "1"}
}

经过链路智能编排，等效于

<?xml version="1.0" encoding="UTF-8"?>
<rule>
    <strategy>
        <version>{"discovery-guide-service-a":"1.0","discovery-guide-service-b":"1.0"}</version>
    </strategy>
    <strategy-release>
        <conditions type="blue-green">
            <condition id="condition-0" expression="#H['xyz'] == '1'" version-id="route-0"/>
            <condition id="condition-1" expression="#H['xyz'] == '2'" version-id="route-1"/>
        </conditions>
        <conditions type="gray">
            <condition id="condition-0" expression="#H['xyz'] == '3'" version-id="route-0=10;route-1=90"/>
            <condition id="condition-1" expression="#H['xyz'] == '4'" version-id="route-0=40;route-1=60"/>
            <condition id="condition-2" version-id="route-0=0;route-1=100"/>
        </conditions>
        <routes>
            <route id="route-0" type="version">{"discovery-guide-service-a":"1.0","discovery-guide-service-b":"1.0"}</route>
            <route id="route-1" type="version">{"discovery-guide-service-a":"1.1","discovery-guide-service-b":"1.1"}</route>
        </routes>
        <header>{"xyz":"1"}</header>
    </strategy-release>
</rule>

环境搭建，请参考

具体用法，请参考




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